Q: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Question: Who is the oldest member of Olga's paternal family that was present for the nuptials? Passage:Present for the nuptials in Patmos were several members of Olga's paternal family, including Queen Sofia of Spain (née Princess of Greece and Denmark), former King Constantine II of the Hellenes and his consort Queen Anne Marie (née Princess of Denmark), Prince Michael of Greece and Denmark and his wife, Marina (bride's parents), and Princess Irene of Greece and Denmark. With the exception of 78-year-old Margherita, Dowager Archduchess of Austria-Este (née Princess of Savoy-Aosta), all members of the Aosta branch of the House of Savoy were in attendance, i.e. Prince Amedeo of Savoy, 5th Duke of Aosta (bridegroom's father) and his consort Silvia, Duchess of Aosta, Princess Claude of Orléans ( Princess of France, bridegroom's mother), as well as Aimone's two full sisters, Princess Bianca Countess Arrivabene-Valenti-Gonzaga and Princess Mafalda Madame Lombardo di San Chirico, as well as Maria-Cristina (née Princess of Savoy-Aosta) and her husband Prince Casimir of Bourbon-Two Sicilies. From the senior branch of the Italian royal family Princess Maria Gabriella of Savoy (daughter of the late King Umberto II of Italy) was present, as she had been at the Athens wedding of Olga's parents in 1965.

A:
b